Clinical significance of microvascular invasion in the comprehensive diagnosis and treatment of hepatocellular carcinoma / 中华消化外科杂志

ABSTRACT

Microvascular invasion (MVI) is one of the invasive characteristics of hepatocellular carcinoma (HCC) and also an independent risk factor for intrahepatic and distant metastasis of hepatocellular carcinoma.The occurrence of MVI in patients with hepatocellular carcinoma is universal and can occur in different stages of hepatocellular carcinoma,which is the result of the joint action of multiple factors,including tumor diameter,tumor morphology,tumor pathological grading,and hepatitis B virus activity and replication.For patients with preoperative assessment of MVI risk factors,reasonable surgical plans should be made according to the basic conditions of patients.Non-anatomic hepatectomy is performed to expand the resection scope as far as possible (at least ＞ 1 cm),and anatomic hepatectomy is performed with complete Laennec cystectomy along the Glisson system.Pathological examination is the gold standard of MVI diagnosis,and standardized diagnosis can improve the detection rate of MVI.MVI is mainly related to early postoperative recurrence of hepatocellular carcinoma (within 1 year).For patients with positive MVI after HCC resection,selective combination with transcatheter arterial chemoembolization,radiotherapy and molecular targeted drugs can reduce tumor recurrence and prolong the survival time of patients with liver cancer without recurrence.Therefore,MVI has important clinical significance for the comprehensive diagnosis and treatment of hepatocellular carcinoma.